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06 wrx won't start, no cel codes/obd access

ecu obd2 ignition bad earth faulty sensor open/short circuit

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#1 jake87

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Posted 02 August 2017 - 09:46 PM

2006 wrx, 
-car cranks but won't start
-power to coils and injectors, but no pulse
-Main fan stays on when ignition is switched on
-mobile mechanic and a friend who both have decent scanners couldn't read the ecu
-pin out on data connection may not be standard
-when ignition is turned to the ON position, fuel pump will only prime if mad sensor is disconnected
-oil pressure light and check engine light are all that stays illuminated. 
Check engine light is constant (doesn't blink)
-keyless entry stopped working, even after I replaced the battery 

I've gone through and checked most earth connections and even added extra ones.

The battery has been disconnect regularly to put on charge, I've tried to do a ecu reset hopping it would clear the fault and recalibrate. But no luck

The car has an exhaust which starts just behind the front wheels, a walbro fuel pump and the previous owner has jumped and spliced a number of wires that connect to the ecu. Some connectors have been spliced in for ecu mapping I'm guessing 

I'm wondering if the ecu is faulty, but under close inspection I can't visually see any damage.or maybe it can't re calibrate because of all the jumped and spliced wires.
 
 


#2 surge

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Posted 03 August 2017 - 06:25 AM

Does it have something like a brant alarm?

#3 jake87

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Posted 03 August 2017 - 04:16 PM

It's been taken out


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#4 jake87

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Posted 05 August 2017 - 02:13 AM

I swapped the ecu out but nothing is different

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#5 El_Freddo

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Posted 06 August 2017 - 12:29 PM

Sounds to me like the ECU is missing a few sensor inputs.

Fans on all the time says that the temp sensor is shot.

No spark suggests cam sensor or crank sensor.

Can you manually read the codes by plugging the black plugs above the driver's feet for check engine light code reading? I'm sure subaru would keep this feature in the later models. Long dash is x10, short is x1. So two long dashes and three short is a code 23. Then it'll move on to the next code, or keep repeating which indicates there's only one code.

I'd be suspicious of that wire tampering going on at the ECU. Have you double checked that everything is wired up properly and that nothing has been missed. All it takes is one wire and it won't work.

All the best with it. Keep us updated!

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Also tagged with one or more of these keywords: ecu, obd2, ignition, bad earth, faulty sensor, open/short circuit

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